Discussion or comment?

[Susan Decoteau-Ferrier]

I have what may seem like a silly question but when is it appropriate to post as a "discussion" versus a "comment"? It looks like they get used interchangeably to me. I want to be sure I use each appropriately.

 

Susan Decoteau-Ferrier
Freelance Travel Writer / Blogger

Blog: GypsyTales01.wordpress.com
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Twitter: @Gypsy_Tales